What Have Recent Cross-Cultural Studies of Gender Roles Demonstrated

What have recent cross-cultural studies of gender roles demonstrated?

A) The gender roles of men and women are largely determined by their biological capabilities-relative strength, endurance, intelligence, etc.
B) Women are subservient to men in nearly all societies because their subsistence activities contribute much less to the total diet than do those of men.
C) The relative status of women is variable, depending on factors such as subsistence strategy, the importance of warfare, and the prevalence of a domestic-public dichotomy.
D) Foraging, horticultural, pastoral, and industrial societies all have similar attitudes regarding gender roles.
E) Changes in the gender roles of men and women are usually associated with social decay and anarchy.